Abstract: A general mathematical model is developed to describe the behavior of fixed bed reactor for removing hydrogen sulfide by impregnated activated carbon,and the governing equations are solved by testing-calibration differential-difference ethod.The general chracteristics of the desulfurizing process in a fixed bed reactor are analysed by model simulation.The results show that the average sulfur capacity over the whole reactor can be increased by using smaller desulfurizing agent and by operating at a lower space velocity,but it has nothing to do with the H_2S concentration in inlet gas．

摘要： 建立了浸渍活性炭固定床脱硫反应器数学模型，并用逼近的微分──差分方法进行求解，以此讨论了固定床反应器内气体脱硫过程的一般规律.模拟结果表明，在较低空速下操作以及使用较小颗粒的脱硫剂可以延长床层的使用寿命，提高操作硫容量，而与进料浓度无关.